<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
          数据类型一定要和取出的json中的一致，否则没法回填
          因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">

        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
        </el-button>

        <!--
    v-show：是否显示上传组件
    :key：类似于id，如果一个页面多个图片上传控件，可以做区分
    :url：后台上传的url地址
    @close：关闭上传组件
    @crop-upload-success：上传成功后的回调
      <input type="file" name="file"/>
    -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary"
                   @click="saveOrUpdate">保存
        </el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
  import teacherApi from "@/api/edu/teacher";
  import ImageCropper from '@/components/ImageCropper'
  import PanThumb from '@/components/PanThumb'

  export default {
    components: {ImageCropper, PanThumb},
    name: "save",
    data() {
      return {
        teacher: {
          name: '',
          sort: 0,
          level: 1,
          career: '',
          intro: '',
          avatar: '',
        },
        saveBtnDisabled: false, //保存按钮是否禁用
        //上传弹框组件是否显示
        imagecropperShow: false,
        imagecropperKey: 0,//上传组件key值
        BASE_API: process.env.BASE_API, //获取dev.env.js里面地址
      }
    },
    methods: {
      init() {
        //判断路径有id值,做修改
        if (this.$route.params && this.$route.params.id) {
          //从路径获取id值
          const id = this.$route.params.id
          //调用根据id查询的方法
          this.getInfo(id)
        } else { //路径没有id值，做添加
          //清空表单
          this.teacher = {}
        }
      },
      getInfo(id) {
        teacherApi.getTeacherInfo(id)
          .then(resp => {
            this.teacher = resp.data.teacher
          })
      },
      saveOrUpdate() {
        this.saveBtnDisabled = true//禁用按钮，防止多次提交
        if (this.$route.params && this.$route.params.id) {
          //修改讲师信息
          this.updateTeacher(this.teacher)
        } else {
          //提交讲师信息
          this.saveTeacher()
        }
      },
      //添加讲师的方法
      saveTeacher() {
        this.teacher.avatar = null
        teacherApi.addTeacherId(this.teacher)
          .then(resp => {//添加成功
            //提示信息
            this.$message({
              type: 'success',
              message: '添加成功!'
            });
            //回到列表.路由跳转
            this.$router.push("/teacher")
          })
      },
      //修改讲师的方法
      updateTeacher(teacher) {
        console.log(teacher);
        teacherApi.updateTeacherInfo(teacher)
          .then(resp => {//添加成功
            //提示信息
            this.$message({
              type: 'success',
              message: '修改成功!'
            });
            //回到列表.路由跳转
            this.$router.push("/teacher")
          })
      },
      close() { //关闭上传弹框的方法
        this.imagecropperShow=false
        //上传组件初始化
        this.imagecropperKey = this.imagecropperKey+1
      },
      //上传成功方法
      cropSuccess(data) {
        this.imagecropperShow=false
        //上传之后接口返回图片地址
        this.teacher.avatar = data.url
        this.imagecropperKey = this.imagecropperKey+1
      },

    },
    watch: {
      //监听
      $route(to, from) { //路由变化方式，路由发生变化，方法就会执行
        this.init()
      }
    },
    created() {
      this.init()
    }
  }
</script>

<style scoped>

</style>
